#include <iostream>
#include <queue>
#include <map>
#include <set>
#include <cmath>
#include <cstring>
#include <algorithm>
#include <iomanip>
#include <stack>
#include <numeric>
#include <ctime>
#include <string>
#include <bitset>
#include <unordered_map>
#include <unordered_set>


using namespace std;

//const int N = 2e5 + 5, mod = 1e9 + 7, inf = 2e18;
int n, k, ans;


void solve()
{
    int a,b,c,d;
    cin>>a>>b>>c>>d;
    if(a==b&&b==c&&c==d)cout<<"YES"<<endl;
    else cout<<"NO"<<endl;
}

signed main() {
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);

    int t = 1;

    cin >> t;

    while (t--) {

        solve();

    }
    return 0;
}
